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Finding the Fourth Proportional to 324,216.80, 486,033.60 and 205,827.20

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Solution

The fourth proportional to 324,216.80, 486,033.60 and 205,827.20 is: 308,555.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,216.80 : 486,033.60 = 205,827.20 : x
  2. Step 2: Convert to fraction form
    324,216.80/486,033.60 = 205,827.20/x
  3. Step 3: Cross multiply
    324,216.80x = 486,033.60 × 205,827.20
  4. Step 4: Simplify right side
    324,216.80x = 100,038,934,993.92
  5. Step 5: Solve for x
    x = 100,038,934,993.92/324,216.80
  6. Step 6: Final answer
    x = 308,555.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.